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Refactor ObjectStructure

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* Divide ObjectStructure into 3 types
* Add transition look up hash map into ObjectStructureWithTransition
* Use faster version of log2 on Vector

Signed-off-by: seonghyun kim <sh8281.kim@samsung.com>
This commit is contained in:
seonghyun kim 2019-11-04 15:44:33 +09:00 • committed by Hyukwoo Park
commit 82c99fc298
20 changed files with 657 additions and 311 deletions
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10
src/runtime/ArrayObject.cpp
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@ -95,7 +95,7 @@ bool ArrayObject::defineOwnProperty(ExecutionState& state, const ObjectPropertyN
}
uint64_t idx = P.tryToUseAsArrayIndex();
auto oldLenDesc = structure()->readProperty(state, (size_t)0);
auto oldLenDesc = structure()->readProperty((size_t)0);
uint32_t oldLen = getArrayLength(state);
if (idx != Value::InvalidArrayIndexValue) {
@ -271,9 +271,7 @@ void ArrayObject::convertIntoNonFastMode(ExecutionState& state)
if (!isFastModeArray())
return;
if (!structure()->isStructureWithFastAccess()) {
m_structure = structure()->convertToWithFastAccess(state);
}
m_structure = structure()->convertToNonTransitionStructure();
ensureObjectRareData()->m_isFastModeArrayObject = false;
@ -298,7 +296,7 @@ bool ArrayObject::setArrayLength(ExecutionState& state, const uint64_t newLength
if (LIKELY(isFastModeArray())) {
auto oldSize = getArrayLength(state);
auto oldLenDesc = structure()->readProperty(state, (size_t)0);
auto oldLenDesc = structure()->readProperty((size_t)0);
m_values[ESCARGOT_OBJECT_BUILTIN_PROPERTY_NUMBER] = Value(newLength);
m_fastModeData.resize(oldSize, newLength, Value(Value::EmptyValue));
@ -308,7 +306,7 @@ bool ArrayObject::setArrayLength(ExecutionState& state, const uint64_t newLength
return true;
} else {
if (!isInArrayObjectDefineOwnProperty()) {
auto oldLenDesc = structure()->readProperty(state, (size_t)0);
auto oldLenDesc = structure()->readProperty((size_t)0);
int64_t oldLen = length(state);
int64_t newLen = newLength;